QID 239336

Date Published: 2021-05-20

QID 239336: Red Hat Update for glibc (RHSA-2021:1585)

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd)
used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es): glibc: buffer over-read in iconv when processing invalid multi-byte input sequences in the EUC-KR encoding (CVE-2019-25013) glibc: regular-expression match via proceed_next_node in posix/regexec.c leads to heap-based buffer over-read (CVE-2019-9169) glibc: assertion failure in ISO-2022-JP-3 gconv module related to combining characters (CVE-2021-3326) glibc: iconv program can hang when invoked with the -c option (CVE-2016-10228) glibc: iconv when processing invalid multi-byte input sequences fails to advance the input state, which could result in an infinite loop (CVE-2020-27618)

Affected Products:

Red Hat Enterprise Linux for x86_64 8 x86_64
Red Hat Enterprise Linux for IBM z Systems 8 s390x
Red Hat Enterprise Linux for Power, little endian 8 ppc64le
Red Hat Enterprise Linux for ARM 64 8 aarch64
Red Hat CodeReady Linux Builder for x86_64 8 x86_64
Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.

    Refer to Red Hat security advisory RHSA-2021:1585 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239336

    CVE-2016-10228 | CVE-2019-9169 | CVE-2019-25013 | CVE-2020-27618 | CVE-2021-3326 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:1585 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:1585?language=en
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